R.I.P. Fleas Extra contains 2 pyrethroid insecticides – permethrin and tetramethrin. All pyrethroid insecticides are essentially toxic to ‘cold-blooded’ species including fish, reptiles and beneficial insects (such as bees). It is therefore recommended that fish tanks are either removed from the room, or if this is not possible, wholly covered (for example, with thick blankets) and the aerator pump switched off before spraying. Any floor-residing aerator pumps should, where possible, be raised off the floor during the application process. Vivaria should be treated similarly. Whilst the threat to cage birds is lower, birds and bird cages should also be removed from the room before spraying. Immediately after spraying, open windows and ventilate the room for at least 1 hour. Make sure all spray mist has settled and all surfaces are dry before allowing animals to re-enter the room and before removing any covering from fish tanks or vivaria and switching the aerator pump back on.